A theoretical description of the electronic states of the SBr radical at a high level of correlation effects treatment is presented for the first time.Most of its potential energy curves have a repulsive nature,but a set of bound ~2PI states should provide a means for the experimental characterization of this species.The ground state can support over 40 vibrational states,but transitions from the 2 ~2PI state,with a very shallow well (four levels),should have intensities spread over a maximum around v"=10; lower vibrational levels can only be accessed for transitions from two high-lying Rydberg states.A whole set of spectroscopic constants,including vibrationally averaged spin-orbit coupling constants,and radiative transition probabilities and lifetimes quantify the theoretical description,thus supplying reliable results to guide the experimental investigation of this species.
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